The IGo is also going to be very heavy..over 50lbs. Just wondering how you narrowed it down to these two companies?
Since you are talking hills, I believe the IGo's geometry is going to be more hill friendly. The super-upright position on the Pedego may make hills more difficult. Hoping someone who has a Pedego in hill country could chime in here.
Both bikes have a hub motor, which generally aren't considered the very best for hills. Would you be willing to consider a mid drive? Another reason to consider a mid drive is flat tires may be easier to deal with, depending on the setup.
In your situation, a company's return policy is important (in case the bike doesn't do what you want it to), and what if something goes wrong, who is going to help you fix the problem?
Visit whatever bike shops are already in Helena to get a feel for who might help you with the regular bike maintenance. Then see who might help with your motor system.
Personally I will have to drive 2-3 hours for my motor maintenance (one way), so not everyone has a shop right down the street.
Lots of considerations, but this will be a big investment, and it is worth the extra effort to do a bit of legwork beforehand. Pedego is a company with a great reputation, I am not familiar with IGo.
So, check to see about return policies, maintenance, and repair issues. It is also important to test ride bikes to make sure they are comfortable.